SERVER-7704 - linux compile warning
SERVER-7698 avoid collisions between dbcase.js and dbcase2.js
SERVER-7666 don't drain maxSize shards, only prevent to-migrations
SERVER-7159: use 1mb boundary for ^2 allocs larger than 4mb
SERVER-7159: use isCapped() accessor method
SERVER-7610 use volatile bool for _killPending flag rather than AtomicInt32

10x faster
SERVER-939 Added field type constants for config.locks collection
SERVER-7701 improve test speed (FreeBSD is slow)
Try to make jstests/sharding/auth.js more robust
Fix jstests/sharding/auth.js
kill newnear, allow >1 special index type
fix query optimizer test compile
Don't create temp vector when converting from BSONArray to Value
SERVER-7423 Support commands for read preference

Step#2 Added mongos support.
SERVER-3602 similar functionality, fewer chars
SERVER-939 Introduced types for config.databases and config.chunks collections.
SERVER-7699 buildbot temporary fix and explicitly wait for secondaries, more digging needed
SERVER-6591 Fix localhost auth exception in sharded systems
SERVER-7358 pre-split new colls when using a hashed shard key
SERVER-939 Added field type constants for config.lockpings collection